(units=
N)
(units =
N/C)
(units =
N/C)
(units
N*m^2/C)
A has magnitude of the area and is perpendicular to the surface.
IMPORTANT: q is charge INSIDE the Gaussian Surface as any outside charges have no effect on the net flux.
Electric Potential Engery
(units
J) (s is displacement)
(units
J)
When finding the potiential engery of serval chareges, sum all the poptentials between all charges. For example with 3 charges a, b, and c:
So you should have n choose 2 terms in the sum.
Electric Potential
(units
J/C)
(units
J/C)
(
r is distance)
Simplified Relations
(
d is distance)
(units
Farad=C/V)
Parallel Plate
(
d is distance between)
Cylinders
(
a = inner raduis, b= outer radius)
Spheres
(
a = inner raduis, b= outer radius)
In Parallel
Remember: V is equal through parallel.
In Series
Remember: Q is equal through series.
Engery Stored in Capacitator
Constants
Charge Densities
Equations
Surface area of sphere
Volume of sphere
Units